Question

find the cost of 30 notebooks at the rate of 20 rupees per dozen​

Answer 1

Answer:

50 rupees

Step-by-step explanation:

Let cost of 30 books equal to x

12 books----> 20 rupees

30 books---->x

Using unitary method,

(30*20)/12

5*10

==>50 rupees

PLEASE MARK BRAINIEST

Answer 2

Answer:

30 notebooks is rupees 50